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authorAlexander Aring <aahringo@redhat.com>2021-10-13 10:02:00 -0400
committerAndreas Gruenbacher <agruenba@redhat.com>2021-10-25 08:42:20 +0200
commit660a6126f8c3208f6df8d552039cda078a8426d1 (patch)
tree5f0564f84181680ad3a87f60fc54a5076b8d116d /fs/gfs2/glock.c
parent7427f3bb49d81525b7dd1d0f7c5f6bbc752e6f0e (diff)
gfs2: check context in gfs2_glock_put
Add a might_sleep call into gfs2_glock_put which can sleep in DLM when the last reference is released. This will show problems earlier, and not only when the last reference is put. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.c')
-rw-r--r--fs/gfs2/glock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 6e3bd5ab9108..19f38aee1b61 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -301,6 +301,9 @@ void gfs2_glock_queue_put(struct gfs2_glock *gl)
void gfs2_glock_put(struct gfs2_glock *gl)
{
+ /* last put could call sleepable dlm api */
+ might_sleep();
+
if (lockref_put_or_lock(&gl->gl_lockref))
return;